According to a report on TechCrunch, Angel investor John Borthwick revealed the sum at the blog's Real-Time Stream CrunchUp event late last week.
This latest round of funding followed a seed round in January, in which TweetDeck raised £300,000.
London-based is the preferred client for many Twitter users because its easy-to-use interface allows them to see their followers, @replies and direct messages, as well as searches, all in one place.
The company is reportedly planning to expand its service and aggregate web-wide updates.
Earlier this month, Twitter chief executive Evan Williams revealed that there has been over 11,000 third-party apps registered with the microblogging website, with a large majority of these in development and production.
Last week, two companies were working on ways to embed advertising into Twitter.
San Francisco startup Social Media is working on an ad product called Twitter Sparq, which will embed advertising in Twitter streams, while Federated Media Publishing has rolled out , sponsored by Universal Pictures, which aggregates Twitter messages on film topics.
CinemaTweets.com is currently promoting Universal's 'Bruno' release by skinning the page with the Sacha Baron Cohen character and featuring his tweets from .
FMP also plans to roll out two more brand-sponsored sites aggregating tweets in the next month.
.jpg)
.jpg)